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Angular collenchyma occurs in

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Important Questions on Biology

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A major characteristic of the monocot root is the presence of:
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Tendons & ligaments are which of the following types of tissue:-
 
EASY
Which of the following plants tissues cannot be used as explant in tissue culture?
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Identify A, B and C in the given diagram of shoot apical meristem ?

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EASY
Conjunctive tissue is present between i and ii in iii.
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Which is the living mechanical tissue in plants?
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Match the Column-I with Column-II and select the correct option

Column-I Column-II
(a) Ciliated columnar epithelium (i) Endothelium
(b) Cuboidal epithelium (ii) Upper respiratory tract
(c) Squamous epithelium (iii) Thyroid follicle
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Tracheids differ from the tracheary elements in:
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Vascular bundles in monocotyledons are considered closed because:
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Which of the following are the characteristic features of phloem?

i) Gymnosperms have albuminous cells and sieve cells

ii) Presence of tracheids

iii) They store food materials in the form of starch or fat

iv) They have sieve tube elements that are long, tube-like structures

v) Their end walls are perforated in a sieve like manner

The correct combination is

MEDIUM

Match List - I with List - II.

List-I List-II
(a) Cells with active cell division capacity (i) Vascular tissues
(b) Tissue having all cells similar in structure and function (ii) Meristematic tissue
(c) Tissue having different types of cells (iii) Sclereids
(d) Dead cells with highly thickened walls and narrow lumen (iv) Simple tissue

Select the correct answer from the options given below.

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In which type of vascular bundles are Xylem and Phloem present at the same radius?
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Select the correct combination?
(i) Fruit wall of nuts
(ii) Pulp of fruit like guava and pear
(iii) Seed coat of legumes
(iv) Micropyle of pea
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A chilly plant was severely infected with Chilly Mosaic Virus (CMV). Identify the technique that helps to raise virus free plants in the next generation from the above virus infected plant.
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The stalk of a plant leaf is derived from which one of the following types of plant tissue?